Is Sleep broken/too powerful or simply another viable aspect of Pokemon? Is it overcentralizing? It's not nearly as hard to play around as it used to be. We already had Lum Berry, Safeguard, Taunt and Heal Bell, but now we also have Electric Terrain and Misty Terrain, Grass types are immune, Overcoat protects from powder moves, and Safety Goggles almost works like limitless Chesto Berry. Not to note we have a new AWESOME prankster user, Klefki, who can use priority safeguard or priority taunt as a lead, and if the opponent doesn't lead with his sleeper then you can set up screens instead! Sleep was overpowered in Gen V, but hey, things change with time.
This is a cool battle I managed to win becuase I used double sleep, but it's not like I destroyed the guy. We had an even game and he could have won if he used Fake Out + Thunderbolt on my Vivillon the first turn.
Does it restrain teambuilding too much? How much preparation does a team require to combat sleep? Not too much. Because of the many ways to combat sleep, picking one or two for your team isnt hard at all. For an example, Aegislash's King's Shield doesn't pretect against spore, so he is major sleep bait. Putting Safety Goggles or Lum Berry on him can screw a sleep user over so hard that he loses(I learned that the hard way).
Does Sleep have an overall positive/neutral/negative impact to the Doubles metagame? How does Sleep affect the metagame? A lot of people say that sleep punishes poor teambuilding. They're right. Not having a way to deal with sleep is like not having a way to deal with set ups. If you lose to it, you should remake your team. It helps people learn and become better at the game.
Are there any suspects independent of Sleep that you want to raise attention to the council? There is one thing: High Jump Kick! It's such an unfair move. 130 BP, with 90% accuracy! That's more power
and more accuracy then the monster moves like Hydro Pump or Fire Blast. Moves with 120 or 110 BP always have harsh negatives to consider, like pitiful accuracy, recoil damage or lowered stats. But the only thing HJK has is recoil damage
if you miss! Flare Blitz has less power and ALWAYS deals recoil damage,
except if you miss. Meaning HJK has a 90% chance to
destroy at no cost, and a 10% chance of
only being negative
to yourself. That's stupid. It's like if you were to have a button that makes you nuke your enemy, but the nuke has a small chance of blowing up in your face. Also, if HJK was banned for singles, maybe, just maybe, Blaziken wouldn't have to be uber anymore! It's best Fighting STAB would be Sky Uppercut, which only has about 65% of HJK's power. I know that Blaziken thing is off-topic, but it was just a thought.